Summaryinfo

A vulnerability was found in go-vikunja vikunja up to 2.2.0. It has been declared as critical. This vulnerability affects unknown code of the file pkg/modules/migration/helpers.go of the component File Attachment Handler. The manipulation results in server-side request forgery. This vulnerability is identified as CVE-2026-33675. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in go-vikunja vikunja up to 2.2.0. It has been classified as critical. Affected is some unknown processing of the file pkg/modules/migration/helpers.go of the component File Attachment Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, the migration helper functions `DownloadFile` and `DownloadFileWithHeaders` in `pkg/modules/migration/helpers.go` make arbitrary HTTP GET requests without any SSRF protection. When a user triggers a Todoist or Trello migration, file attachment URLs from the third-party API response are passed directly to these functions, allowing an attacker to force the Vikunja server to fetch internal network resources and return the response as a downloadable task attachment. Version 2.2.1 patches the issue.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-33675 since 03/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit.

Upgrading to version 2.2.1 eliminates this vulnerability. The upgrade is hosted for download at vikunja.io. Applying the patch 93297742236e3d33af72c993e5da960db01d259e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• go-vikunja

Name

• vikunja

Version

• 2.0
• 2.1
• 2.2.0

License

• open-source

Website

• Product: https://github.com/go-vikunja/vikunja/

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